Ballistic Trajectory Simulation: Parametric Equations & Vector Decomposition

This example demonstrates the ballistic trajectory of 2D projectile motion through parametric equations visualizing parabolic paths. Core mathematical concepts include: (1) parabolic equations and kinematic formulas; (2) velocity vector decomposition into horizontal component v0x and vertical component v0y; (3) gravitational acceleration g's effect on vertical motion. Construction highlights: Vector command for velocity vectors, PointIn for moving particle, Slider animation showing continuous time parameter t, PolyLine for complete trajectory curves, Textfield for interactive parameter input (initial velocity v0, launch angle α, etc.), If statements controlling animation start/stop and reset. Suitable for high school physics and mathematics courses, teaching parametric equations of oblique projectile motion, vector operations, and dynamic visualization of function graphs.